A skilled ballet dancer appears to move in a seemingly floating motion, seeming to defy gravity in a grand jeté. Which of the following is part of how this is done?
moving her arms and legs to keep her center of mass at the about same height above the ground.
moving her arms and legs so that her center of mass is kept from accelerating downward
moving her arms and legs to cause her center of mass to move upward while falling
moving her arms and legs so that as her center of mass moves, she keeps her head at the same height above the ground
being supported from the ceiling by a hidden cable not visible to the audience
OPTION 3 )moving her arms and legs so that as her center of mass moves, she keeps her head at the same height above the ground,when ballet leaps ,she stretches her legs such that her center of mass moves closer to her head and when she is returning from jump to ground center of mass moves to original position .therefore it appears to defy gravity as head is moving almost horizontal
A skilled ballet dancer appears to move in a seemingly floating motion, seeming to defy gravity...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...